The particles that are in an atom: protons, neutrons and electrons The particles that are in protons and neutrons: quarks The four fundamental forces: gravity, electromagnetism, the strong force and ...

After a decade-long analysis, a collaboration of physicists has made the most precise measurement of the mass of a key particle – and it may unravel physics as we know it. The new measurement differs ...

For the past half century or so, a theory known by the understated name of the Standard Model has dominated the field of particle physics. This theory provides us with a detailed description of the 17 ...

No one has ever probed a particle more stringently than this. In a new experiment, scientists measured a magnetic property of the electron more carefully than ever before, making the most precise ...

There’s something amiss with a mass. A new measurement of the mass of an elementary particle, the W boson, has defied expectations. The result hints at a possible flaw in physicists’ otherwise ...

THE STANDARD MODEL of particle physics—completed in 1973—is the jewel in the crown of modern physics. It predicts the properties of elementary particles and forces with mind-boggling accuracy. Take ...

Once a surprise to physicists, these particles are useful tools inside and outside the realm of particle physics.

The W boson, one of the tiniest, most elementary particles in the known universe is causing a big ruckus in the field of particle physics. According to the Standard Model, W bosons (together with ...

The muon’s mysteries continue to leave physicists spellbound. Last year, an experiment suggested that the elementary particle had inexplicably strong magnetism, possibly breaking a decades-long streak ...

This month marks the 10th anniversary of the discovery of the Higgs boson, a true “Holy Grail” of science that had eluded detection for almost 50 years. But what exactly is this particle, and why is ...

It is once again stocky particle spring. You might recall that, one year ago, researchers at Fermilab announced the discovery of a fat wobbly muon. Now, they have another offering for us: a boson with ...

DEEP UNDER the countryside north of Geneva, straddling the Franco-Swiss border, one of the most advanced scientific machines ever built has been banging subatomic particles together for more than a ...